HD 148797

Planetary system · 562.2 light-years away · also HD 148797, TYC 8720-1711-1

HD 148797 is 562 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this F6 star; the first was found in 2026 by transit (Transiting Exoplanet Survey Satellite (TESS)).

Fly there in 3D

Worth knowing

HD 148797 b goes round its star every 42.1 days, 2.1 times as often as Mercury goes round the Sun.

The star

Spectral typeF6
Surface temperature6,441 K
Mass1.272 solar masses
Radius1.547 solar radii
Luminosity3.82 times the Sun
Apparent magnitude9.569
Ageabout 2.94 billion years
Distance from the Sun562.2 light-years (172.4 parsecs)
Position (J2000)RA 248.4128°, Dec -56.6993°
ConstellationNorma

Planets (2)

PlanetYearOrbitRadiusMassFound
HD 148797 b42.1 days0.257 AU8.25 R⊕39.3 M⊕Transit, 2026
HD 148797 c68.2 days0.354 AU8.3619 R⊕39.6 M⊕Transit, 2026

Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.

The planets, compared

For a star of 6,441 K, 3.8 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.78 to 3.10 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.

The light you see left 562 years ago, around 1460.

Nearest systems to it

Also found by Transiting Exoplanet Survey Satellite (TESS)

Sources

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